Add Gatherly

Add Gatherly -- Self-destructing, shareable, no-registration event pages (_inspired by Gath.io_)

README.md

@@ -1679,6 +1679,7 @@ _Related: [Booking and Scheduling](#booking-and-scheduling)_
 - [Formbricks](https://formbricks.com) - Experience Management Suite built on the largest open source survey stack worldwide. Gracefully gather feedback at every step of the customer journey to know what your customers need. ([Demo](https://app.formbricks.com), [Source Code](https://github.com/formbricks/formbricks)) `AGPL-3.0` `Nodejs/Docker`
 - [Framadate](https://framadate.org/abc/) - Online service for planning an appointment or make a decision quickly and easily: Make a poll, Define dates or subjects to choose, Send the poll link to your friends or colleagues, Discuss and make a decision. ([Demo](https://framadate.org/aqg259dth55iuhwm), [Source Code](https://framagit.org/framasoft/framadate?)) `CECILL-B` `PHP`
 - [Gancio](https://gancio.org/) - Local community event and agenda sharing. ([Demo](https://demo.gancio.org/), [Source Code](https://framagit.org/les/gancio)) `AGPL-3.0` `Nodejs`
+- [Gatherly](https://gatherly.mills.io) - Self-destructing, shareable, no-registration event pages (_inspired by Gath.io_). ([Demo](https://gatherly.mills.io), [Source Code](https://git.mills.io/prologic/gatherly) `MIT` `Go/Docker`.
 - [gathio](https://docs.gath.io/) - Self-destructing, shareable, no-registration event pages. ([Demo](https://gath.io/), [Source Code](https://github.com/lowercasename/gathio)) `GPL-3.0` `Nodejs/Docker`
 - [HeyForm](https://heyform.net) - Form builder that allows anyone to create engaging conversational forms for surveys, questionnaires, quizzes, and polls. ([Source Code](https://github.com/heyform/heyform)) `AGPL-3.0` `Docker`
 - [hitobito](https://hitobito.com) - Manage complex group hierarchies with members, events and a lot more. ([Demo](https://demo.hitobito.com/en/users/sign_in), [Source Code](https://github.com/hitobito/hitobito)) `AGPL-3.0` `Ruby`